DevTools: follow up to r168484, do not add same parent twice into flame chart.

Source/devtools/front_end/TimelineFlameChart.js

 /*
  * Copyright (C) 2014 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 203 matching lines @@
                     this._timelineData.entryTotalTimes[recordIndex] = childStartTime - record.startTime;
                     recordIndex = -1;
                 } else {
                     this._pushRecord(record, true, level, currentTime, childStartTime);
                 }
             }
             this._pushRecord(record, false, level, childStartTime, childEndTime);
             this._appendRecord(childRecord, level + 1);
             currentTime = childEndTime;
         }
-        if (recordEndTime !== currentTime || record.children.length === 0)
+        if (recordIndex === -1 && recordEndTime !== currentTime || record.children.length === 0)
             this._pushRecord(record, true, level, currentTime, recordEndTime);
 
         this._maxStackDepth = Math.max(this._maxStackDepth, level + 2);
     },
 
     /**
      * @param {!WebInspector.TimelineModel.Record} record
      * @param {boolean} isSelfSegment
      * @param {number} level
      * @param {number} startTime
@@ skipping 197 matching lines @@
      */
     _onEntrySelected: function(event)
     {
         var entryIndex = event.data;
         var record = this._dataProvider._records[entryIndex];
         this._delegate.selectRecord(record);
     },
 
     __proto__: WebInspector.View.prototype
 }